CN214852911U - Maize straw recycling treatment equipment - Google Patents

Abstract

The utility model discloses a maize straw recycling treatment facility relates to maize straw recovery plant technical field. The utility model discloses a frame, feed mechanism, central rotation mechanism, dissect circular knife and elasticity steel wire roller, the bottom fixed connection of frame supports the base, one side fixed connection feed mechanism of frame, feed mechanism's delivery outlet correspondence is fixed with the feed roll, and the feed roll is linear array distribution between the frame, one section distance fixedly connected with central rotation mechanism of department of feed mechanism's delivery outlet, central rotation mechanism's delivery outlet is fixed with dissects the circular knife, the opposite side of dissecting the circular knife is fixed with elasticity steel wire roller, and elasticity steel wire roller is connected between the frame through the pivot, and the pivot outside of elasticity steel wire roller stretches out the pivot of holding fixed connection driving motor. The utility model discloses an adopt central rotation mechanism to do cyclic annular operation to the characteristic of maize leaf, high-speed effectual blade of getting rid of, what set up simultaneously dissects circular knife and the effectual maize straw skin of sweeping off.

Description

Maize straw recycling treatment equipment

Technical Field

The utility model belongs to the technical field of maize straw recovery plant, especially relate to maize straw treatment facility of recycling.

Background

Corn is one of the most important crops, the fruits of corn, straws and straw skins of the corn contain a large amount of trace elements, the straws are rich in nitrogen, phosphorus, potassium, calcium, magnesium, organic matters and the like, the corn is a multipurpose renewable biological resource, the straws are also a coarse feed, and although the corn can be quickly harvested in the actual use of the current corn harvester, the corn harvester still has defects in the actual use.

The prior publication, CN110622713A, an agricultural environment-friendly treatment device for corn stalks, discloses a cutter arranged at the upper end of a feed inlet, the upper end of the cutting knife is fixedly arranged at the telescopic end of the hydraulic push rod, the crushing box body is internally provided with a crushing blade, the crushing blade is fixedly arranged on the rotating shaft, the top end inside the crushing box body is provided with a supporting plate, a plurality of vertical plates are uniformly arranged at the bottom end of the supporting plate at intervals, U-shaped grooves are arranged in the middle positions of the bottom ends of the vertical plates, an electric telescopic rod is fixedly arranged at the top end of the supporting plate, although the straws wound on the crushing blades can be removed to a certain extent, in practical use, because the weak part of the corn leaf is positioned at the root of each section of the corn straw, when actually getting rid of, the effect is relatively poor, is not convenient for effectually to get rid of the straw skin high efficiency simultaneously.

The prior published document, CN112544209A, discloses a harvesting device for automatically collecting and processing corn straws, which comprises a harvesting box and a feeding mechanism arranged on the left side of the harvesting box, wherein a power mechanism is arranged on the rear side of the harvesting box, a moving mechanism is arranged on the lower side of the harvesting box, and a harvesting cavity is arranged in the harvesting box, the feeding port of the harvesting device adopts a clamping and conveying structure of double conveyor belts, so that the situation that the straws slide due to insufficient friction during cutting is prevented, then the straws are cut into two halves by fixing a cutter holder, the cut surfaces of the straws face downwards through a material guide block with a special shape, and the straws are separated by a pulp scraping structure, the effects of removing blades and removing straw barks can be realized to a certain extent, but in actual use, the cutter is corroded by sugar water on the straw barks and the sugar water on the blades is not beneficial to simple maintenance, and the effects of separating the blades and the straw barks are poor, meanwhile, the material is easy to block during feeding, and a large amount of manpower is consumed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a maize straw treatment facility of recycling through fixed connection feed mechanism, central rotation mechanism and elasticity steel wire roller in proper order on the inside horizontal direction of frame, has solved current maize straw treatment facility and has not been convenient for the efficient and carry out the problem of separating the blade on the maize straw, has solved the problem that current maize straw treatment facility efficient separates the maize straw skin and places the corrosion cutter simultaneously.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model discloses a maize straw recycling treatment facility, include frame, feed mechanism, central rotation mechanism, dissect circular knife and elasticity steel wire roller, the bottom fixed connection of frame supports the base, one side fixed connection feed mechanism of frame, feed mechanism's delivery outlet correspondence is fixed with the feed roll, and the feed roll is linear array and distributes between the frame, one section distance department fixedly connected with central rotation mechanism of feed mechanism's delivery outlet, central rotation mechanism's delivery outlet is fixed with dissects the circular knife, dissect the opposite side of circular knife and be fixed with elasticity steel wire roller, and elasticity steel wire roller connects between the frame through the pivot, and the pivot outside of elasticity steel wire roller stretches out the commentaries on classics of holding fixed connection driving motor.

Further, the bottom fixed connection of frame supports the base, be fixed with the feed roll between the frame, and the both ends of feed roll all through bearing fixed connection on the curb plate of frame, the pivot of feed roll all connects outside actuating mechanism through the belt drive, the opposite side fixedly connected with pay-off slope of frame, and the pay-off slope is located relative feed mechanism's opposite side, the frame is horizontal fixed connection on supporting the base, and supports the bottom fixed connection supporting leg of base, there is certain clearance between the feed roll, the pivot of feed roll all connects outside actuating mechanism through the belt drive.

Furthermore, a vertical cavity and a horizontal cavity are formed in the feeding mechanism, rectangular grooves are formed in the top and the bottom of one side of the horizontal cavity, supporting plates are fixedly connected to the outer sides of the rectangular grooves, material clamping rollers are connected between the supporting plates through shafts, the bottoms of the material clamping rollers are located in the horizontal cavity, the material clamping rollers are located on one side of a feeding mechanism box body, and the cross section of the feeding mechanism box body is in a right trapezoid shape and a rectangular shape.

Furthermore, a rectangular groove is formed in the outer side wall of the feeding mechanism, the inner portion of the rectangular groove is connected with a material shifting plate in a sliding mode, the bottom of the material shifting plate is connected with a connecting shaft through a bearing, the bottom end of the connecting shaft is connected with one end of a connecting rod through a bearing, the other end of the connecting rod is connected with a rotary table in a rotating mode, the connecting rod is connected to the eccentric position on the circular face of the rotary table in a rotating mode, the top of the rotary table is fixedly connected with a feeding motor through a shaft, the feeding motor is fixedly connected to the bottom of a box body of the feeding mechanism, a rod outlet hole is formed in the side wall of the box body of the feeding mechanism and located on one side, corresponding to the material clamping roller, of the box body of the feeding mechanism, the rod outlet hole is formed in the side wall of the feeding mechanism, the circle center of the rod outlet hole is located between the feeding rollers, and the material clamping rollers are located in the same horizontal direction.

Furthermore, on the horizontal direction between the material clamping rollers, a central revolving mechanism, a sectioning circular knife and an elastic steel wire roller are fixedly connected in sequence according to the feeding direction, the axis of the central revolving mechanism and a bisecting line between the sectioning circular knives are positioned on the same horizontal line, and two sides of the material clamping rollers are fixedly connected between the side plates through rotating shafts.

Furthermore, a through hole is formed in the horizontal direction inside the center rotating mechanism, the annular gear sleeve is fixedly connected to the outer side of the cylinder of the center rotating mechanism and meshed with the driving gear, the driving gear is fixedly connected with the rotating motor through a shaft, the rotating motor is fixedly connected to the inside of the rack through a connecting frame, the cylindrical through hole is formed in the center rotating mechanism, the center rotating mechanism is fixedly connected with the conical surface gear sleeve corresponding to one side of the feeding direction, and grooves distributed in an annular mode are formed in the conical surface gear sleeve.

Further, one side cylinder end fixed connection conical surface tooth cover of center rotation mechanism, and conical surface tooth cover are located the cylinder and are close to one side of feed mechanism, center rotation mechanism passes through the bearing and fixes the inboard at external axle sleeve, and external axle sleeve passes through dead lever fixed connection on the horizontal plane that supports the base, external axle sleeve is connected through the bearing in the outside of center rotation mechanism, the quantity of external axle sleeve is two, and the bottom of external axle sleeve all passes through dead lever welded fastening and connects on supporting the base.

Further, dissect the circular knife and pass through metal frame fixed connection on the horizontal plane that supports the base, and dissect the quantity of circular knife and be two, be located the top and the bottom both sides of defeated material direction respectively, dissect the quantity of circular knife and be two, and dissect the circular knife and put fixed connection between adjacent feed roll on the level.

Furthermore, the elastic steel wire roller comprises a fixed shaft and an outer shaft sleeve, the outer shaft sleeve is sleeved on the outer side of the fixed shaft, steel wire inserting columns which are uniformly distributed are fixedly connected to the cylindrical surface of the outer shaft sleeve, the extending ends of the steel wire inserting columns are conical sharp-thorn-shaped metal sheets, and the steel wire inserting columns are fixed on the outer wall of the outer shaft sleeve in a surrounding mode.

The utility model discloses following beneficial effect has:

1. the utility model discloses an annular operation is done to the characteristic of maize leaf to central rotation mechanism, the root of maize leaf weak point at each festival of maize straw, stripper when annular operation acts on the horizontal direction of straw, through the recess that one side annular distributes, under the effect of feed roll, the blade on the maize straw extends to the outside, when the straw passes the inside through-hole of central rotation mechanism, the blade will be swept away by rotatory conical surface tooth cover, simple structure and efficiency are higher, the effectual blade that prevents blocks up and causes the trouble inside the structure.

2. The utility model discloses a fixed connection is gone up the circumstances that fixed connection mutually supported and dissects circular knife and elastic steel wire roller on supporting the base, at the during operation, maize straw through removing the leaf transports along the horizontal direction under the effect of feed roll, maize straw is through dissecting between the circular knife, top and bottom will be dissected by the level, make the straw skin on the maize straw separately, then steel wire inserted column through the elastic steel wire roller under the transportation of feed roll pulls, effectually transport the separation with maize straw skin, prevent that traditional cutter direct cutting maize straw skin from causing the equipment corrosion to appear.

3. The utility model discloses a set up feed mechanism in feed position department, through the inside switch-plate that sets up the reciprocating motion of being convenient for of feed mechanism, at the during operation, only need in batches with the maize straw level of length violently put into the inside at the workbin, the switch-plate will reciprocating motion promote the maize straw of bottom single through pressing from both sides the material roller transportation, process, improve work efficiency and alleviate intensity of labour and recruitment, improve economic benefits.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an internal structural view of the present invention;

FIG. 3 is an internal structure view of the feeding mechanism of the present invention;

FIG. 4 is an external structure view of the feeding mechanism of the present invention;

FIG. 5 is a partial structure view of the center revolving mechanism of the present invention;

fig. 6 is a partial structure view of the elastic wire roller of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a frame; 11. a support base; 12. a feed roller; 13. a feeding slope; 2. a feeding mechanism; 21. a support plate; 22. a material clamping roller; 23. a feeding motor; 24. a turntable; 25. a connecting rod; 26. a connecting shaft; 27. a kick-out plate; 28. a rod outlet hole; 3. a central slewing mechanism; 31. an annular gear sleeve; 32. a drive gear; 33. rotating the motor; 34. a conical surface gear sleeve; 35. the shaft sleeve is externally connected; 36. fixing the rod; 4. sectioning a circular knife; 5. a drive motor; 6. an elastic wire roll; 61. a fixed shaft; 62. an outer sleeve; 63. and inserting steel wires into the columns.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Please refer to fig. 1-6, the utility model relates to a corn stalk recycling treatment device, which comprises a frame 1, a feeding mechanism 2, a central revolving mechanism 3, a sectioning circular knife 4 and an elastic steel wire roller 6, wherein the bottom of the frame 1 is fixedly connected with a supporting base 11, one side of the frame 1 is fixedly connected with the feeding mechanism 2, an output port of the feeding mechanism 2 is correspondingly fixed with a feed roller 12, the feed roller 12 is distributed between the frame 1 in a linear array, the output port of the feeding mechanism 2 is fixedly connected with the central revolving mechanism 3 at a distance, the output port of the central revolving mechanism 3 is fixed with the sectioning circular knife 4, the other side of the sectioning circular knife 4 is fixed with the elastic steel wire roller 6, the elastic steel wire roller 6 is connected between the frame 1 through a rotating shaft, the outer extending end of the rotating shaft of the elastic steel wire roller 6 is fixedly connected with the rotating shaft of a driving motor 5, the model of the driving motor 5 is YE2 series, the serial model is a common model in the market and is not described in more detail here.

As shown in fig. 2-4, the bottom of the frame 1 is fixedly connected with a supporting base 11, a feeding roller 12 is fixed between the frames 1, two ends of the feeding roller 12 are fixedly connected with side plates of the frame 1 through bearings, a rotating shaft of the feeding roller 12 is connected with an external driving mechanism through belt transmission, the other side of the frame 1 is fixedly connected with a feeding slope 13, the feeding slope 13 is positioned at the other side opposite to the feeding mechanism 2, a vertical cavity and a horizontal cavity are arranged inside the feeding mechanism 2, a rectangular groove is arranged at the top and the bottom of one side of the horizontal cavity, a supporting plate 21 is fixedly connected with the outer side of the rectangular groove, a material clamping roller 22 is connected between the supporting plates 21 through a shaft, the bottom of the material clamping roller 22 is positioned inside the horizontal cavity, a rectangular groove is arranged on the outer side wall of the feeding mechanism 2, a material poking plate 27 is connected with the inside of the rectangular groove in a sliding manner, the bottom of the poking plate 27 is connected with a connecting shaft 26 through bearings, the bottom end of a connecting shaft 26 is connected with one end of a connecting rod 25 through a bearing, the other end of the connecting rod 25 is rotatably connected with a rotary table 24, the connecting rod 25 is rotatably connected at an eccentric position on the round surface of the rotary table 24, the top of the rotary table 24 is fixedly connected with a feeding motor 23 through a shaft, the type of the feeding motor 23 is a common small motor type on the market, and the feeding motor 23 is fixedly connected at the bottom of a box body of a feeding mechanism 2, a rod outlet hole 28 is formed in the side wall of the box body of the feeding mechanism 2, and the rod outlet hole 28 is positioned at one side of the box body of the feeding mechanism 2 corresponding to a material clamping roller 22, when in work, firstly, uniformly carded corn straws are uniformly placed in the feeding mechanism 2 through a material inlet, then the feeding motor 23 in the feeding mechanism 2 is started, when in work, the feeding motor 23 drives the rotary table 24 at the bottom to rotate, and in the rotating process, the shifting plate 27 is driven by the connecting rod 25 to reciprocate on one side of the box body of the feeding mechanism 2 in the horizontal direction, corn straws with single bottom layer in the moving process are gradually and singly pushed to the space between the material clamping rollers 22, meanwhile, the material clamping rollers 22 are driven by corresponding motors, and the corn straws between the material clamping rollers 22 pass through the rod outlet holes 28 to be transported to the space between the nearest feeding rollers 12.

As shown in fig. 2 and 5, a central revolving mechanism 3, a sectioning circular knife 4 and an elastic steel wire roller 6 are fixedly connected in sequence in the horizontal direction between the material clamping rollers 22 according to the feeding direction, a through hole is formed in the horizontal direction inside the central revolving mechanism 3, an annular gear sleeve 31 is fixedly connected to the outer side of a cylinder of the central revolving mechanism 3, the annular gear sleeve 31 is engaged with a driving gear 32, the driving gear 32 is fixedly connected with a rotating motor 33 through a shaft, the type of the rotating motor 33 is a common small motor type on the market, and when no description is made, the rotating motor 33 is fixedly connected to the inside of the frame 1 through a connecting frame, a cylindrical end at one side of the central revolving mechanism 3 is fixedly connected with a conical gear sleeve 34, the conical gear sleeve 34 is located at one side of the cylinder close to the feeding mechanism 2, the central revolving mechanism 3 is fixed to the inner side of an external shaft sleeve 35 through a bearing, and the external shaft sleeve 35 is fixedly connected to the horizontal plane of the supporting base 11 through a fixing rod 36, during operation, corn straws are conveyed to the inside of the circular hole between the central rotating mechanisms 3 under the transportation of the feed roller 12, meanwhile, the rotating motor 33 at the corresponding position drives the barrel of the central rotating mechanism 3 to rotate through meshing transmission, then the conical surface tooth sleeve 34 fixed at one side sweeps blades around the corn straws which are conveyed horizontally, and then the corn straws processed by the swept blades are conveyed to one side of the sectioning circular knife 4 under the action of the feed roller 12 again.

As shown in fig. 2 and fig. 6, the sectioning circular knives 4 are fixedly connected on the horizontal plane of the supporting base 11 through metal frames, and the number of the sectioning circular knives 4 is two, and the sectioning circular knives 4 are respectively positioned at the top and the bottom sides of the conveying direction, the elastic steel wire roller 6 comprises a fixed shaft 61 and an outer shaft sleeve 62, the outer side of the fixed shaft 61 is sleeved with the outer shaft sleeve 62, and the cylindrical surface of the outer shaft sleeve 62 is fixedly connected with steel wire inserting columns 63 which are uniformly distributed, and the extending end of the steel wire inserting column 63 is a conical sharp-thorn-shaped metal sheet, when in work, the feeding roller 12 conveys corn straws between the sectioning circular knives 4 through clamping, then under the action of horizontal driving force, the top and the bottom peripheral sides of the corn straws are cut, under the conveying action of the feeding roller 12 until the corn straws completely pass between the sectioning circular knives 4, and are finally conveyed to the top of the elastic steel wire roller 6, the elastic steel wire roller 6 is under the action of an external driving motor 5, the quick rotation forms rotatoryly with feed roll 12, and then the steel wire of the last week side of elastic wire roller 6 inserts the post 63 and will insert on corn stalk's epidermis, at rotatory in-process, drags down, and the straw skin will fall into subaerially at last can.

One specific application of this embodiment is: firstly, when in work, firstly, the corn straws are arranged and then uniformly and horizontally placed in the feeding mechanism 2, then under the action of gravity, the corn straws are uniformly arranged at the bottommost part to form a single layer of corn straws, the feeding motor 23 is started, the feeding motor 23 drives one end of a connecting rod 25 to push in the horizontal direction through the rotation of a rotary disc 24 at the bottom, meanwhile, the connecting rod 25 pushes a material stirring plate 27 to move in the horizontal direction through a connecting shaft 26 at the other side, and then the single corn straws are pushed to a position between material clamping rollers 22, secondly, the corn straws are conveyed to an inner through hole of a central rotating mechanism 3 through a feeding roller 12, then a rotating motor 33 works, the central rotating mechanism 3 is driven to rotate through meshing transmission, blades extending from the peripheral side of the corn straws are swept away through a conical surface toothed sleeve 34 in the rotating process, thirdly, the corn straws are conveyed to a position between sectioning circular knives 4, and fourthly, the corn straws are horizontally placed and moved under the driving of the feeding roller 12, the circular cutter 4 is immediately cut to open the peripheral sides of the corn straws, and fifth step, the corn straws subjected to surface cutting are finally conveyed to the top of the elastic steel wire roller 6, the skins of the corn straws are inserted under the action of the steel wire inserting column 63 and are pulled down, and finally the corn skins fall on the ground.

The above is only the preferred embodiment of the present invention, and the present invention is not limited thereto, any technical solutions recorded in the foregoing embodiments are modified, and some technical features thereof are replaced with equivalent ones, and any modification, equivalent replacement, and improvement made thereby all belong to the protection scope of the present invention.

Claims (9)

1. Maize straw processing apparatus that recycles, including frame (1), feed mechanism (2), central rotation mechanism (3), dissect circular knife (4) and elasticity steel wire roller (6), its characterized in that: the bottom fixed connection of frame (1) supports base (11), one side fixed connection feed mechanism (2) of frame (1), the delivery outlet correspondence of feed mechanism (2) is fixed with feed roll (12), and feed roll (12) are linear array and distribute between frame (1), one section distance department fixedly connected with center rotation mechanism (3) of delivery outlet of feed mechanism (2), the delivery outlet of center rotation mechanism (3) is fixed with dissects circular knife (4), dissect the opposite side of circular knife (4) and be fixed with elasticity steel wire roller (6), and elasticity steel wire roller (6) are connected between frame (1) through the pivot, and the pivot of the pivot outside extension end fixed connection driving motor (5) of elasticity steel wire roller (6).

2. The corn straw recycling and processing equipment according to claim 1, wherein the bottom of the machine frame (1) is fixedly connected with a support base (11), a feeding roller (12) is fixed between the machine frames (1), two ends of the feeding roller (12) are fixedly connected to side plates of the machine frame (1) through bearings, rotating shafts of the feeding roller (12) are connected with an external driving mechanism through belt transmission, a feeding slope (13) is fixedly connected to the other side of the machine frame (1), and the feeding slope (13) is located on the other side opposite to the feeding mechanism (2).

3. The corn straw recycling and processing equipment as claimed in claim 1, wherein a vertical cavity and a horizontal cavity are formed in the feeding mechanism (2), rectangular grooves are formed in the top and the bottom of one side of the horizontal cavity, supporting plates (21) are fixedly connected to the outer sides of the rectangular grooves, the supporting plates (21) are connected with each other through shafts to form a material clamping roller (22), and the bottom of the material clamping roller (22) is located in the horizontal cavity.

4. The corn stalk recycling and processing equipment as claimed in claim 3, wherein the outer side wall of the feeding mechanism (2) is provided with a rectangular groove, the interior of the rectangular groove is connected with a kick-out plate (27) in a sliding way, the bottom of the kick-out plate (27) is connected with a connecting shaft (26) through a bearing, the bottom end of the connecting shaft (26) is connected with one end of a connecting rod (25) through a bearing, the other end of the connecting rod (25) is rotatably connected with a turntable (24), and the connecting rod (25) is rotationally connected with the eccentric position on the circular surface of the turntable (24), the top of the turntable (24) is fixedly connected with a feeding motor (23) through a shaft, the feeding motor (23) is fixedly connected to the bottom of the box body of the feeding mechanism (2), a rod outlet hole (28) is arranged on the side wall of the box body of the feeding mechanism (2), and the rod outlet hole (28) is positioned on one side of the box body corresponding to the material clamping roller (22) relative to the feeding mechanism (2).

5. The corn stalk recycling and processing equipment as claimed in claim 4, wherein the central revolving mechanism (3), the sectioning circular knife (4) and the elastic wire roller (6) are fixedly connected in sequence in the horizontal direction between the material clamping rollers (22) according to the feeding direction.

6. The corn stalk recycling and processing equipment as claimed in claim 1, wherein the center revolving mechanism (3) is provided with a through hole in the horizontal direction inside, an annular gear sleeve (31) is fixedly connected to the outer side of the cylinder of the center revolving mechanism (3), the annular gear sleeve (31) is engaged with a driving gear (32), the driving gear (32) is fixedly connected with a rotating motor (33) through a shaft, and the rotating motor (33) is fixedly connected inside the frame (1) through a connecting frame.

7. The corn stalk recycling and processing equipment as claimed in claim 1, wherein the cylindrical end of one side of the central revolving mechanism (3) is fixedly connected with a conical gear sleeve (34), the conical gear sleeve (34) is positioned on one side of the cylinder close to the feeding mechanism (2), the central revolving mechanism (3) is fixed on the inner side of an external shaft sleeve (35) through a bearing, and the external shaft sleeve (35) is fixedly connected on the horizontal plane of the supporting base (11) through a fixing rod (36).

8. The corn stalk recycling and processing apparatus as claimed in claim 1, wherein the cutting circular knives (4) are fixedly connected to the horizontal plane of the supporting base (11) through metal frames, and the number of the cutting circular knives (4) is two, and the two cutting circular knives are respectively positioned at the top and the bottom of the conveying direction.

9. The corn straw recycling and processing equipment according to claim 1, wherein the elastic steel wire roller (6) comprises a fixed shaft (61) and an outer shaft sleeve (62), the outer side of the fixed shaft (61) is sleeved with the outer shaft sleeve (62), steel wire inserting columns (63) which are uniformly distributed are fixedly connected to the cylindrical surface of the outer shaft sleeve (62), and the extending end of each steel wire inserting column (63) is a conical sharp-pointed metal sheet.

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